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How should I go about solving a quadratic equation?

There are more ways how to solve such equation:You can use the quadratic formula after rearranging the equation into the standard form. That is the safest way because you just learn the formula and use it ov...
LM
Answered by Linda M. • Maths tutor
3476 Views

How do I find and determine the nature of stationary points of a function?

There are 3 types of stationary points for functions: a maxima, a minima and a saddle point. They all occur when the derivative of a function, f(x), is equal to 0, e.g. f'(x)=0. Therefore in order to find th...
BD
Answered by Ben D. • Maths tutor
12315 Views

Use the Chain Rule to differentiate the following equation: y=e^(3-2x)

Chain Rule: dy/dx = dy/du x du/dxy=e 3-2x Substitute u for the power (3-2x) y = e u u = 3-2xdy/du = e u du/dx = -2dy/dx = -2e u = -2e 3-2x
JW
Answered by Jordan W. • Maths tutor
4242 Views

0.15^2 x (1-0.15)^3 to 2 s.f

BIDMASFirst must donwhat is inside the brackets1-0.15 = 0.85Next must do the indices 0.85^3= 0.6141250.15^2 =0.0225Then multiply0.0225 x 0.614125 = 0.01381781shorten to 2 s.f0.014
FM
Answered by Francesca M. • Maths tutor
3148 Views

The population of a town in 2014 was 80058. This was a 65% increase on its population in 1994. What was the population in 1994?

Firstly, look at what the question is asking you to find out. You need to work out the population from 1994. You are told that there was an increase from 1994 to 2014. Therefore you can take the population i...
CM
Answered by Clare M. • Maths tutor
4481 Views